Why my authority is decreasing?

[tourtravel]

My autorithy has recentrly decreased from 13 to 10..somebody knows what could be the reason and how I cna improve/correct this?

tx

[cis]

Hi Tourtravel,

Domain Authority is also an important factor to improve your blog ranking in search engine.Domain Authority ( also known as DA ) is calculation of certain cause made by SEOmoz (a big shot in the world of Search Engine Optimization) to show authority of a website. It’s like Alexa Ranking and Google Page Rank but webmasters and Advertisers pay special attention on DA as it is calculated by considering both.

As you know that Domain & Page Authority of website can be increase & decreases. If you do quality link building according Google Algorith then you will have increase in Domain & Page autority, so overall website reputation increases but if don't perform the Google guidelines then Page & domain autority decreases, also website reputaion decreases.

The explaination of Page & Domain Autority is here: http://moz.com/blog/introducing-seomoz-updated-page-authority-and-domain-authority

Moz published description of some factors used in calculating SEOmoz Domain Authority.http://moz.com/blog/googles-algorithm-pretty-charts-math-stuff

Thanks,

[PhilNottingham]

Domain Authority is logarithmic and compares your site against all of the other sites in the Moz index. Sites can be compared against one another within a specific crawl, but you can't reasonably compare your own site crawl to crawl - since each crawl may end up pulling in information for different sites which therefore adjusts your placement within the overall scheme of authority. Fluctuations between a few points (like 10 and 13) is therefore completely normal.

In short - your authority probably hasn't "decreased", it's just that the index from the latest crawl has a higher median number of LRDs than the previous index.

I hope that makes sense.